Flower-like CoS2/MoS2 nanocomposite with enhanced electrocatalytic activity for hydrogen evolution reaction

Lulu Chen; Wenxiu Yang; Xiangjian Liu; Jianbo Jia

doi:10.1016/j.ijhydene.2017.03.054

Flower-like CoS₂/MoS₂ nanocomposite with enhanced electrocatalytic activity for hydrogen evolution reaction

Lulu Chen, Wenxiu Yang, Xiangjian Liu, Jianbo Jia^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

94 Citations (Scopus)

Abstract

Molybdenum sulfide (MoS₂) has received tremendous attracts for its promising performance in the aspects of hydrogen evolution reaction (HER). To improve the HER activity of MoS₂, we designed a flower-shaped CoS₂/MoS₂ nanocomposite with enhanced HER electroactivity compared with MoS₂ nanosheets by a simple one-step hydrothermal method. The facile approach brings about distinct transformation of the morphology from nanosheets to nanoflower structures. The introduction of Co element into MoS₂ results in the larger active surface area, more edge-terminated structures, and higher conductivity of the CoS₂/MoS₂ nanocomposite, which are good for improving the HER electroactivity. In brief, the optimized catalyst exhibits the low overpotential of 154 mV at 10 mA cm⁻², small Tafel slope of 61 mV dec⁻¹, and excellent stability in acidic solution.

Original language	English
Pages (from-to)	12246-12253
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	42
Issue number	17
DOIs	https://doi.org/10.1016/j.ijhydene.2017.03.054
Publication status	Published - 27 Apr 2017
Externally published	Yes

Keywords

CoS
Hydrogen evolution reaction
Hydrothermal method
MoS
Nanocomposite

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.ijhydene.2017.03.054

Cite this

@article{93e096e5e82c4d95a7a9870cb63f4216,

title = "Flower-like CoS2/MoS2 nanocomposite with enhanced electrocatalytic activity for hydrogen evolution reaction",

abstract = "Molybdenum sulfide (MoS2) has received tremendous attracts for its promising performance in the aspects of hydrogen evolution reaction (HER). To improve the HER activity of MoS2, we designed a flower-shaped CoS2/MoS2 nanocomposite with enhanced HER electroactivity compared with MoS2 nanosheets by a simple one-step hydrothermal method. The facile approach brings about distinct transformation of the morphology from nanosheets to nanoflower structures. The introduction of Co element into MoS2 results in the larger active surface area, more edge-terminated structures, and higher conductivity of the CoS2/MoS2 nanocomposite, which are good for improving the HER electroactivity. In brief, the optimized catalyst exhibits the low overpotential of 154 mV at 10 mA cm−2, small Tafel slope of 61 mV dec−1, and excellent stability in acidic solution.",

keywords = "CoS, Hydrogen evolution reaction, Hydrothermal method, MoS, Nanocomposite",

author = "Lulu Chen and Wenxiu Yang and Xiangjian Liu and Jianbo Jia",

note = "Publisher Copyright: {\textcopyright} 2017 Hydrogen Energy Publications LLC",

year = "2017",

month = apr,

day = "27",

doi = "10.1016/j.ijhydene.2017.03.054",

language = "English",

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pages = "12246--12253",

journal = "International Journal of Hydrogen Energy",

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TY - JOUR

T1 - Flower-like CoS2/MoS2 nanocomposite with enhanced electrocatalytic activity for hydrogen evolution reaction

AU - Chen, Lulu

AU - Yang, Wenxiu

AU - Liu, Xiangjian

AU - Jia, Jianbo

PY - 2017/4/27

Y1 - 2017/4/27

N2 - Molybdenum sulfide (MoS2) has received tremendous attracts for its promising performance in the aspects of hydrogen evolution reaction (HER). To improve the HER activity of MoS2, we designed a flower-shaped CoS2/MoS2 nanocomposite with enhanced HER electroactivity compared with MoS2 nanosheets by a simple one-step hydrothermal method. The facile approach brings about distinct transformation of the morphology from nanosheets to nanoflower structures. The introduction of Co element into MoS2 results in the larger active surface area, more edge-terminated structures, and higher conductivity of the CoS2/MoS2 nanocomposite, which are good for improving the HER electroactivity. In brief, the optimized catalyst exhibits the low overpotential of 154 mV at 10 mA cm−2, small Tafel slope of 61 mV dec−1, and excellent stability in acidic solution.

AB - Molybdenum sulfide (MoS2) has received tremendous attracts for its promising performance in the aspects of hydrogen evolution reaction (HER). To improve the HER activity of MoS2, we designed a flower-shaped CoS2/MoS2 nanocomposite with enhanced HER electroactivity compared with MoS2 nanosheets by a simple one-step hydrothermal method. The facile approach brings about distinct transformation of the morphology from nanosheets to nanoflower structures. The introduction of Co element into MoS2 results in the larger active surface area, more edge-terminated structures, and higher conductivity of the CoS2/MoS2 nanocomposite, which are good for improving the HER electroactivity. In brief, the optimized catalyst exhibits the low overpotential of 154 mV at 10 mA cm−2, small Tafel slope of 61 mV dec−1, and excellent stability in acidic solution.

KW - CoS

KW - Hydrogen evolution reaction

KW - Hydrothermal method

KW - MoS

KW - Nanocomposite

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